import static java.lang.System.out;
import java.util.Scanner;
public class Lab6_2 {
		public static void main(String arg[]){
			Scanner sc = new Scanner(System.in);
			String input = sc.next();
			
			for(int i=(input.length()-1);i>=0;i--){
			out.print(input.charAt(i));
			}
			
		}//end main funccc
}
